*,*::before,*::after{box-sizing:border-box}
:root{--blue:#0A2F6E;--blue2:#1556c0;--ink:#0F172A;--muted:#5b6677;--bg:#fff;--soft:#f5f7fa;--line:#e6e9ef}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:var(--blue2);text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:40px;height:40px;border-radius:50%;object-fit:cover}
.brand b{font-family:Rajdhani,sans-serif;font-weight:700;font-size:1.05rem;color:var(--blue);letter-spacing:.02em;line-height:1.1;display:block}
.brand span{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.nav a.back{font-weight:600;font-size:.92rem;color:var(--blue);display:inline-flex;align-items:center;gap:7px}
main{padding:48px 0 20px}
.post{max-width:760px;margin:0 auto}
.crumbs{font-size:.82rem;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted)}
.eyebrow{display:inline-block;font-family:Rajdhani,sans-serif;font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.8rem;color:#fff;background:var(--blue);padding:5px 14px;border-radius:6px}
h1.title{font-family:Rajdhani,sans-serif;font-weight:700;font-size:clamp(2rem,4.6vw,3rem);line-height:1.1;color:var(--ink);margin:18px 0 14px}
.pmeta{display:flex;flex-wrap:wrap;gap:14px;color:var(--muted);font-size:.9rem;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:32px}
.content{font-size:1.06rem}
.content h2{font-family:Rajdhani,sans-serif;font-weight:700;font-size:1.6rem;color:var(--blue);margin:38px 0 14px;letter-spacing:.01em}
.content h3{font-family:Rajdhani,sans-serif;font-weight:600;font-size:1.28rem;color:var(--ink);margin:28px 0 10px}
.content p{margin:0 0 18px}
.content ul,.content ol{margin:0 0 20px;padding-left:22px}
.content li{margin-bottom:9px}
.content strong{color:var(--ink)}
.content a{text-decoration:underline;text-underline-offset:3px}
.cta{margin:46px 0;padding:30px;border-radius:16px;background:linear-gradient(135deg,#0A2F6E,#1556c0);color:#fff;text-align:center}
.cta h3{font-family:Rajdhani,sans-serif;font-size:1.5rem;margin:0 0 8px;color:#fff}
.cta p{margin:0 0 18px;color:rgba(255,255,255,.88)}
.cta a{display:inline-block;background:#fff;color:var(--blue);font-weight:700;padding:13px 26px;border-radius:999px}
.related{margin:42px 0;padding-top:26px;border-top:1px solid var(--line)}
.related h4{font-family:Rajdhani,sans-serif;letter-spacing:.1em;text-transform:uppercase;font-size:.82rem;color:var(--muted);margin:0 0 14px}
.related ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.related a{font-weight:600;color:var(--ink)}
.related a:hover{color:var(--blue2)}
.backhome{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--blue);margin-top:14px}
footer.site{margin-top:40px;background:var(--blue);color:rgba(255,255,255,.85);padding:36px 0}
footer.site b{font-family:Rajdhani,sans-serif;color:#fff;font-size:1.1rem}
footer.site .fl{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;align-items:center}
footer.site a{color:#fff}
@media(max-width:600px){body{font-size:16px}main{padding:32px 0}}

/* ===== MOTION DESIGN ===== */
.reading-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:1000;background:linear-gradient(90deg,#0A2F6E,#1556c0);box-shadow:0 0 10px rgba(21,86,192,.5);transition:width .12s linear}
.page-curtain{position:fixed;inset:0;z-index:1100;background:linear-gradient(135deg,#0A2F6E 0%,#1556c0 100%);display:grid;place-items:center;pointer-events:none;animation:moCurtain .85s cubic-bezier(.76,0,.24,1) .1s forwards}
.page-curtain::after{content:"";position:absolute;inset:0;background:radial-gradient(60% 60% at 50% 45%,rgba(255,255,255,.12),transparent 70%)}
.page-curtain .pc-logo{position:relative;font-family:Rajdhani,sans-serif;font-weight:700;font-size:2.6rem;letter-spacing:.14em;color:#fff;animation:moLogo .8s ease both}
@keyframes moCurtain{0%{clip-path:inset(0 0 0 0)}100%{clip-path:inset(0 0 100% 0);opacity:0;visibility:hidden}}
@keyframes moLogo{0%{opacity:0;transform:scale(.82) translateY(8px)}45%{opacity:1;transform:scale(1) translateY(0)}100%{opacity:0;transform:scale(1.08)}}
@keyframes moUp{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
.post .eyebrow{animation:moUp .7s cubic-bezier(.22,.61,.36,1) .62s both}
.post h1.title{animation:moUp .8s cubic-bezier(.22,.61,.36,1) .72s both}
.post .pmeta{animation:moUp .8s cubic-bezier(.22,.61,.36,1) .84s both}
.post .post-figure,.post>.content>*:first-child{will-change:transform,opacity}
html.mo .content>*{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
html.mo .content>*.moin{opacity:1;transform:none}
.brand,header.site .back{animation:moUp .6s ease .3s both}
@media (prefers-reduced-motion: reduce){
  .page-curtain{display:none!important}
  .reading-progress{display:none!important}
  .post .eyebrow,.post h1.title,.post .pmeta,.brand,header.site .back{animation:none!important}
  html.mo .content>*{opacity:1!important;transform:none!important;transition:none!important}
}

/* ===== AESTHETIC UPGRADE v2 ===== */
body{background-color:#eef2f8;background-image:radial-gradient(rgba(10,47,110,.055) 1px,transparent 1px);background-size:22px 22px}
main{padding:34px 0 24px}
.post{position:relative;background:#fff;border:1px solid #e9edf4;border-radius:22px;box-shadow:0 40px 80px -48px rgba(15,23,42,.45);padding:50px 56px 44px;overflow:hidden}
.post::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#0A2F6E,#1556c0 60%,#3d82e0)}
.post .crumbs{margin-top:4px}
.post .eyebrow{box-shadow:0 10px 22px -10px rgba(10,47,110,.55)}
h1.title{letter-spacing:.005em}
.pmeta{color:#6b7689}
.pmeta span:first-child{color:#0A2F6E;font-weight:600}
.content{font-size:1.075rem;color:#27324a}
.content>p:first-of-type{font-size:1.18rem;line-height:1.66;color:#1f2a40}
.content>p:first-of-type::first-letter{font-family:Rajdhani,sans-serif;font-weight:700;font-size:3.5rem;line-height:.78;color:#0A2F6E;float:left;margin:.06em .14em 0 0}
.content h2{position:relative;padding-left:20px;margin-top:42px;color:#0A2F6E}
.content h2::before{content:"";position:absolute;left:0;top:.12em;bottom:.12em;width:5px;border-radius:4px;background:linear-gradient(180deg,#0A2F6E,#1556c0)}
.content h3{color:#15233f}
.content ul{list-style:none;padding-left:2px}
.content ul li{position:relative;padding-left:26px;margin-bottom:11px}
.content ul li::before{content:"";position:absolute;left:3px;top:.55em;width:8px;height:8px;border-radius:2px;background:linear-gradient(135deg,#0A2F6E,#1556c0);transform:rotate(45deg)}
.content strong{color:#0A2F6E}
.content blockquote{border-left:4px solid #1556c0;background:#eef3fb;margin:28px 0;padding:18px 24px;border-radius:0 14px 14px 0;font-style:italic;color:#1d2a44}
.cta{box-shadow:0 28px 56px -26px rgba(10,47,110,.65)}
.related ul{grid-template-columns:1fr 1fr;gap:14px}
.related a{display:block;padding:15px 18px;border:1px solid #e6e9ef;border-radius:14px;background:#fafcff;line-height:1.4;transition:transform .35s cubic-bezier(.22,.61,.36,1),border-color .35s,box-shadow .35s,color .35s}
.related a:hover{transform:translateY(-4px);border-color:#bcd0f0;box-shadow:0 16px 30px -18px rgba(15,23,42,.4);color:#0A2F6E}
@media(max-width:620px){.post{padding:32px 20px 30px;border-radius:16px}.content>p:first-of-type::first-letter{font-size:2.9rem}.related ul{grid-template-columns:1fr}}